Well this is more of a demo I think 10-15 minutes, renders and models look good, but this needs a Shota tag and the Incest one doesn't make sense, (the mc's parents are dead) and a relationship with Miyuki or Ayame is never chosen, Mc could be living in a foster home as far as we know since he is still a kid
... and I don't know to what extent this shouldn't have Kinetic Novel, the player can't reject anyone, you only increase Love or Lust but the scenes develop the same,( I think only 2 options change some dialog)
The transition of some scenes is abrupt, for example: the mc is talking to Miyuki in the house with underwear and the next click they are at the door of the cafe, or when the mc is having breakfast talking with Miyuki the next click he appears in the house talking to Sara or when she says "I have to go shopping with Miyuki" and the next click they are in the club.
The mc?
Some errors in the dialogs, I don't think the dialog corresponds to the name that appears
Leaving all that aside, Dev it wold be good to know if everything is going to be forced or the player is going to have some choice to reject something or someone. (right now it doesn't seem like it)
Anyways, good luck.